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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"

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<head>

<title>matplotlib.testing — Matplotlib 3.4.1 documentation</title>

title="Search within Matplotlib 3.4.1 documentation"

href="../../_static/opensearch.xml"/>

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<h1>Source code for matplotlib.testing</h1><div class="highlight"><pre>

"""

Helper functions for testing.

"""

import locale

import logging

import subprocess

from pathlib import Path

from tempfile import TemporaryDirectory

import matplotlib as mpl

from matplotlib import _api

_log = logging.getLogger(__name__)

<div class="viewcode-block" id="set_font_settings_for_testing"><a class="viewcode-back" href="../../api/testing_api.html#matplotlib.testing.set_font_settings_for_testing">[docs]</a>def set_font_settings_for_testing():

mpl.rcParams['font.family'] = 'DejaVu Sans'

mpl.rcParams['text.hinting'] = 'none'

mpl.rcParams['text.hinting_factor'] = 8</div>

<div class="viewcode-block" id="set_reproducibility_for_testing"><a class="viewcode-back" href="../../api/testing_api.html#matplotlib.testing.set_reproducibility_for_testing">[docs]</a>def set_reproducibility_for_testing():

mpl.rcParams['svg.hashsalt'] = 'matplotlib'</div>

<div class="viewcode-block" id="setup"><a class="viewcode-back" href="../../api/testing_api.html#matplotlib.testing.setup">[docs]</a>def setup():

# The baseline images are created in this locale, so we should use

# it during all of the tests.

try:

locale.setlocale(locale.LC_ALL, 'en_US.UTF-8')

except locale.Error:

try:

except locale.Error:

_log.warning(

"Could not set locale to English/United States. "

"Some date-related tests may fail.")

mpl.use('Agg')

with _api.suppress_matplotlib_deprecation_warning():

mpl.rcdefaults() # Start with all defaults

# These settings *must* be hardcoded for running the comparison tests and

# are not necessarily the default values as specified in rcsetup.py.

set_font_settings_for_testing()

set_reproducibility_for_testing()</div>

def _check_for_pgf(texsystem):

"""

Check if a given TeX system + pgf is available

Parameters

----------

texsystem : str

The executable name to check

"""

with TemporaryDirectory() as tmpdir:

tex_path = Path(tmpdir, "test.tex")

tex_path.write_text(r"""

\documentclass{minimal}

\usepackage{pgf}

\begin{document}

\typeout{pgfversion=\pgfversion}

\makeatletter

\@@end

""")

try:

subprocess.check_call(

[texsystem, "-halt-on-error", str(tex_path)], cwd=tmpdir,

stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)

except (OSError, subprocess.CalledProcessError):

return False

return True

def _has_tex_package(package):

return bool(mpl.dviread.find_tex_file(f"{package}.sty"))

</pre></div>

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Last updated on Mar 31, 2021.

Created using

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Doc version v3.4.1-3-gc6d08c6a8b-dirty.

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